Sash-lock



W. P. KONDRAT.

SASH LOCK.

APPLICATION FILED JULY 14, m9.

Patented Nov. 30, 1920.

awe/M1040 PATENT OFFICE.

WL ADYSLAW P. KONDRA'LOF CLEVELAND, OHIO.

' SASH-LOCK.

Specification of Letters Patent.

Patented Nov. 30, 1920.

Application filed July 14, 1919. Serial No. 310,538.

[0 all whom it may concern:

Be it known that I, VVLADYsLAw P. KoN- DRAT a citizen of the United States, residing at Cleveland, in the countyof Guyahoga and State of Ohio, have invented certain new and useful Improvements inSash- Locks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved sash lock, and an object of the invention is to provide a sash lock capable oflocking both sashes in open positions.

One of the objects of the invention is to provide a sash locking device for so locking the upper and lower sashes as to permit one or the other to open a short distance, sufficient to permit of proper ventilation, and yet will not allow the passage of a body through the window'into the room.

A further object of the invention is the provision of means carried by' the locking member proper, to frictionally engage a housing for said member, to hold the lock ing end of the member from under an opening in an element which receives the end of the locking member, so that the two sashes may be opened theirfull distance.

WVhile the design and construction at present illustrated andset forth is deemed preferable, it is obvious that as a result "of a reduction of the invention to a more practical form for commercial purposes, the invention may be susceptible to changes, and the right to these changes is claimed, provided they are comprehended within the sco e of what is claimed.

he invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

a In the drawings:

Figure 1 is a perspective view ofa portion of the side of the windowframe, showing the upper and lower sashes and the sash locking mechanism applied .thereto.

Fig. 2 is a vertical. sectional view on line 22ofFig.1." q

Fig. 3 is a. plan sectional view on line 3-,-3 of Fig. 2, showing parts broken away.

Fig. 4- is a detail perspective view of the holding guide plate which'is secured upon the upper rail of the lower sash, and in which the locking member is mounted and guided.

Fig. 5 is a detail perspective view of the locking member.

Referring more especially to the drawings, 1 designates a portion of the side of a window frame, and 2 and 3 denote the upper and lower sashes of the window. cured by any suitablev means preferably screws 4, to one of the side rails of the up per sash is an elongated plate 5. This plate has an elongated portion 6, which is concavo-eonvex in cross-section, due to the fact that said portion 6 is pressed outwardly of the plate. This outwardly pressed elon gated portion is provided with an elongated slot 7. The upper end of the outwardly pressed portion 6 is closed as shown at 8, while the lower portion thereof terminates a short distance above the lower part of the plate. In fact, the lower part of the outwardly pressed portion 6 is cut away, to provide an opening 9.

The lower end of the plate 5 is provided with a laterally extending flange 10, which extends at right angles to the body of the plate, and is arranged to cover the upper end of a groove 11, which is formed in the rear face to one side of the upper rail 12 of the 1 lower sash. This groove or opening 11 is constructed for the purpose of permitting the outwardly pressed portionG of the plate 5 to pass the upper rail 12 of the lower sash, when the upper sash is lowered, or when the lower sash is raised. The object of covering the groove or opening 11 is to prevent an instrument of any kindfrom being in serted through the groove, for the purpose of actuating the locking member of the sash lock.

A holding guide casing. 13 is mounted upon the upper rail" 12 of the lower sash.,

This casing 13is open atone end as shown and closed at 14 at itsopposite end. By

fmeans of screws 15 passing through the flanges 16,'the casing 13 is secured to the upperyrail of the lower sash. 'The upperwall of the casing 13 isprovided with an elongated slot. Mounted in the casing 13 is the body 19 of the locking member. The body, of the locking member is elongated and rectangular in form, conforming to the contour of the casing, so as to be guided therein, during its movements toward and from the plate 5. One end of the body of the locking member tapers as shown at 20, and the tapered extremity terminates in a reduced neck 21, which is of a thickness to neatly fit the elongated slot 7 of the plate 5, that is when the lower sash is raised, or the upper sash lowered. Formed integral with the neck 21 is a head 22, which is substantially of a width corresponding to the width of the body 19 of the locking member. One face of the head is flat as shown at 23, while the opposite face bevels off from a point adjacent the neck 21, to the marginal edge of the head. The portion at of the bevel of the head constit'utes means to guide and earn the head under the walls of the outwardly pressed portion 6 of the plate 5, that is when the neck 21 enters the slot 7, when the upper sash is lowered or the lower sash raised. The side portions 25 of the bevel of the head are of such shape, as to conform to the curvature of the outwardly pressed portion 6 of the plate, so as to insure a firm connection between the head and the plate, when the head is in engagement therewith.

The upper wall of thecasing 13 at a point adjacent the plate 5 is cut awayas shown at 26, to permit the locking member to be moved in a direction from the'plate 5,'so as to conform to and receive the beveled face of the head, and also to permit the head to be positioned from under the lower open end of the slot 7, of which the upper end 27 is closed. When the locking member is moved in order to position thehead from under the lower open end of the slot, it is possible to raise the lower sash, or lower the upper sash, without locking the two sashes together for limited movement. The end portions of the flanges 16 nearest the adjacent faces of the meeting rails of both sashes are provided with extension lugs 28, which are embedded or countersunk in one face of the rail 12, and secured by screws 29, thereby additionally securing the casing 13 in position.

A thumb piece 30 has an extension 31, which is of a reduced diameter sufficient to enter the slot 17 of the upper wall of the casing 13, whereby the thumb piece 30 may engage the upper surface of the top'wall of the casing. A second reduced extension 32 projects from the extension 31 and issecured into the body 19 of the locking memb'er'i'n any suitable 'manner, say for instance, by friction or by shrinking the same in place, so that the shoulder 33 intermediate thetwo extensions will engage in the upper face of the body of the locking mem her. A leaf spring 34 extends through the slot 17 and has one end mounted upon the reduced extension 31, at a point between the upper wall of the casing 13, and the upper surface of the body of the locking member. hence holding the leaf spring in position.

The leaf spring: 34 isbent at 35 to extend vertically] downwardly. thereby providing a shoulder 18, which engages one of the end edges of the slot 17, thereby holding the locking member so that the head will be positioned under the channel of the plate 5. Bymeans of this shoulder 18 engaging one of the end edges of. the slot, the locking member is prevented from accidental displacement, in such wise as to move the head of the locking member from under the channel of the plate The lower part of the vertical part of the leaf spring is again bent as at 37 to form the tongue 36, 1 which tongue engages under the upper wall of the casing 13, particularly whenthe bent portion 35 and the inclined part of the spring 34 is protruding through the slot 17. In other words, the tongue 36 limits the movement of the leaf spring through the slot. l Vhen it is desired to remove the head of the locking member from under the lower end of the channel of the plate 5, the spring may be depressed, so that the bent part is in position toride under the top wall of the casing 13, that is when the looking member is moved laterally of the lower sash, by grasping the headed. pin 39. When the spring 34 is depressed, the vertical portion ofthe leaf spring and the tongue will enter the opening 38 in the body 19 of the lock ing member. When the locking member is moved, so as to withdraw the head from un der the channel, the bent portion 35 of the leaf spring will ride against the under surface of the top wall of the casing 13, and

frictionally engage therewith, in order to hold the locking member with its head from under the lower end of the channel of the plate 5. A headed pin 39 is guided in an opening in the closed end wall of the casing 13, and is threaded at 40 in the oneend'fof the body" 19 of the locking member. By means of this headed pin, the loekin'gm'emher isguided and reinforced, during the movement of the locking member, when the locking member is manipulated toward and from the plate 5. In order to lock the sashes, for limited movements, the locking member is arranged, as shown clearly in Figs. 1 and 2, hence when the lower sash is raised; the'head' of the locking member} will enter the space between the plate 6 and the inner face of one of the side rails of the upper sash, particularly since the head conforms to the inner face of the outwardly pressed portion 6 of the plate 5; Should an attempt be made to raise the lower sash or lower the upper sash, the upper closed end 27 of the slot 7 will contact with the neck 21 of the locking member, and hence limit either one of the sashes in its movement. In order that the neck may contact with the closed end 27 of the slot. the head of the locking member enters the outwardly pressed portion of the plate 5, whereas the neck 2 enters the slot 7 In order'tii' raise ill) the lower sash to its fullest extent or likewise lower the upper sash, the thumb piece 30 may be grasped, and the locking member moved to a direction from the plate 5, thereby disposing the neck from under the lower open end of the slot 7, and also to move the head from under the channel or space between the outwardly pressed portion 6 of the plate 5 and the face of the side rail of the upper sash.

When the locking member is moved so as to dispose the nut and the head from under the lower end of the slot and channel of the plate 5 and held in such a position by the bent portion frictionally engaging the under surface of the top wall of the casing 13, it will be seen that either one of the sashes may be moved its fullest extent.

The invention having been set forth, what is claimed as new and useful is The combination with upper and lower sashes, of an elongated plate carried by the upper sash and provided with an elongated channel, of a holding and guiding casing secured in a transverse position on the upper rail of the lower sash, a sash locking member mounted in said casing and having a head adapted to enter the channel of said plate, to permit the sashes to open partially relatively to each other, the upper wall of said casing having a slot, a headed element projecting through the slot and carried by the locking member, a leaf spring mounted on the headed element between its head and the body of the locking member, said leaf spring having a bent portion adapted to project through the slot, said bent portion having a shoulder to engage one end edge of the slot, to hold the head of the locking member under, and in a position to engage said channel, the locking member having an opening to receive the bent portion. when the leaf spring is depressed, whereby the leaf spring adjacent the bent portion may frictionally contact with the under surface of the top wall of the casing to hold the head of the locking member from under the channel, and a device carried by the looking member and guided in the end wall of the casing, to retract the locking member when the leaf spring is depressed and the bent portion in engagement withsaid opening.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

WLADYSLAW P. KONDRAT.

Witnesses:

J. M. RUTKOWKSI, ADAM BANASIK. 

